/*
 * Copyright (C) 2022 Leah Rowe <info@minifree.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#include <stdlib.h>
#include "include/lib/file.h"
#include "include/lib/version.h"

void printUsage()
{
	printGbeDumpAdvice();
	printf("\n");
	printf("Usage: ./nvmswap gbe.bin\n");
}

int main(int argc, char *argv[])
{
	uint8_t* buffer = (uint8_t*) malloc(SIZE_8KB);
	if(buffer==NULL) {
		printf("E: could not allocate enough memory.\n");
		return 1;
	}

	printVersion();
	if (argc != 2) goto fail;

	if (!loadGbeFile(&buffer, argv[1])) goto fail;

	for(int i=0; i<0x1000; i++) {
		buffer[i] ^= buffer[i+0x1000];
		buffer[i+0x1000] ^= buffer[i];
		buffer[i] ^= buffer[i+0x1000];
	}

	if (!writeGbeFile(&buffer, argv[1])) goto fail;

	printf("NVM parts have been swapped in the file.\n");

	free(buffer);
	return 0;
fail:
	free(buffer);
	printUsage();
	return 1;
}
